Machine for trimming the surface of pile carpets.



No. 755,803. PATENTED MAR.29,1904.

B. s. SMITH.

MACHINE FOR TRIMMING THE SURFACE OF PILE CARPBTS.

APPLICATION FILED JULY 2a. 1903.

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PATENTED MAR. 29, 1904.

B. s. SMITH. MACHINE FOR TRIMMING THE SURFACE OF ,PILE CARPETS.

APPLICATION FILED JULY 28. 1903.

2 SHEETS-SHEET 2- N0 MODEL.

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5 0 machine.

Patented March 29, 1904.

UNITED STATES PATENT OFFICE.

BENJAMIN SINCLAIR SMITH, OF PAISLEY, SCOTLAND.

MACHlNE FOR TRIMMING .THE SURFACE OF PlLE-CARPET S.

SPECIFICATION forming part of Letters Patent No. 755,803, dated March 29, 1904.

' Application filed July 28,1903 Serial No. 167,347.- (No model.)

To all whom, it may concern.

Be it known that I, BENJAMIN SINcLAIR SMITH, a subject of the King of the United Kingdom of Great Britain and Ireland, residing at Stonefield Mills, Paisley, Renfrewshire, Scotland, have invented certain new and useful Improvements in Machines for Trimming the Surface of Pile Carpets, of which the follow This invention has for its object to provide a carpet-trimming machine for teazling out, raising, and in part cutting the longer pilewarp-threads, the purpose served by this raising of the pile being to better adapt it for being operated on by the usual cropping-machine, which cuts the pile to even length.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation. Fig. 2 is a plan of the carpet-trimming machine.

The machine comprises a framing a, formed of end standards suitably braced and carrying leading-in or tensioning rolls 6 b, a guide-bar 0, guide-rolls 0 c and drawing-out rolls d cl, over which the carpet or fabric f to be operated on is led and travels, as indicated by the arrows. At a point over and between the guide-bar c and roll 0 a rotating drum is mounted in hearings on the side standards a, said drum being preferably formed of wooden laths e, secured on end disks e, fixed on a shaft e and being fitted with projecting staples or spikes 6 said staples having roundedprojecting ends which in the rotation of the drum are adapted to enter the pile on the surface of the fabric f at the part f where it sags or hangs between the guides 0 c in its passage through the machine and to lift or raise the free ends of the pile.

It is desirable that the pile-warps, which in the weaving operation are left floating between the top and bottom cloths and when out are of considerable length, should be cut short before being presented to the cutters of the cropping- For the purpose of cutting short these long ends of pile-warp the trimming-machine is fitted with cu'tting-blades g g, each formed with mower-knives 9 one blade .being stationary and the other being arranged rotating motion to the drum 6 and reciprocating movement to the cutting-blade 9 suitable gearing is provided, comprising a belt-pulley h on the drum-shaft and another belt-pulley ion a shaft 2', carried in the side frames 0, the said shaft 11 being arranged to drive through bevel-gearing j, a vertical shaft I: also acting through bevel-gearing Zon a horizontal shaft m, on whose end is a crank or eccentric n, connected by a rod or strap 0 to the reciprocating blade g. A worm p on the vertical shaft 7:; gears with a worm-wheel p on one of the guide-roller spindles q, and by a belt-pulley g on said spindle and by a belt r, carried round said pulley and a pulley s on the spindle s of one of the drawing-out rolls (Z, the said rolls d are rotated to pull through the fabric f, which may be delivered direct to a cropping-machine.

The machine being in operation and the drum rotated at the same time as the movable cutter-blade is reciprocated, the action of the drum, with the projecting staples, is to tease out the longer pile-warps, tending to carry them partly around the circumference of the drum and throwing them ofi at a tangent, so as to come into the line of the cutters where the reciprocating blade engages the threads and cooperating with the stationary blade severs their ends as described.

. Having now described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. In a carpet-trimming machine the combination with a framing, of means for drawing through the fabric, a guide-bar and guiderolls, a drum mounted over and between said guide-bar and one of said rolls, staples projecting from said drum, means for rotating said drum in the direction opposite to that of the rolls, blades having mower-knives mounted in proximity to said drum, one of said blades being stationary, and means for reciprocating the other blade, as described.

2. In a carpet-trimming machine the combination Witha framing, of leading-in rolls, a guide-bar, guide-rolls, drawing-out rolls, a drum mounted in said framing, over and between said guide-bar and one of said guiderolls, staples projecting from said drum, mower-blades mounted in front of said guidebar, one of said blades being stationary and the other movable, a driving-shaft, a connection between said driving shaft and said drum, and gearing actuated by said shaft to reciprocate the movable mower-blade, as described.

3. In a carpet-trimming machine in combination with a framing, leading-in rolls, a guide-bar, drawing-out rolls, a drum mounted in said framing, over and between saide guidebar and one of said guide-rolls, said drum comprising end disks and longitudinal laths, staples projecting from said longitudinal laths, mower-blades mounted in front of said guidebar in proximity to said drum, one of said blades being stationary and the other blade movable, a driving-shaft, a connection between said driving-shaft and said drum, and gearing actuated by said shaft to reciprocate the movable blade as described.

4. In a carpet-trimming machine the combination with a framing a, of leading-in rolls 6 6 carried by said framing, a guide-bar 0 over which the fabric to be operated on is led, a drum mounted in bearings on said framing, said drum comprising end disks 6 and longitudinal laths e, staples e 'having rounded ends projecting from said longitudinal laths 6, blades g g formed with mowerknives placed horizontally in front of said guide-bar 0, the blade g being movable and the blade 9 being stationary, a shaft z" carried in said framing, a belt connection from said shaft a" rotating said drum, bevel-gearing actuated from said shaft transmitting motion to said blade 9, and worm-gear transmitting motion to said rolls, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

BENJAMIN SINCLAIR SMITH.

Witnesses:

VVALLAon CRANSTON FAIRWEATHER, JAMES WRIGHT. 

